CS403 Midterm Past Paper

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This quiz will evaluate your preparation for the CS403 midterm examination and it is based on the past papers of CS403. The purpose of this quiz is to evaluate your performance in this subject. If you can pass this quiz, then there is a great chance that you can secure good marks in your exams.

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Created on January 17, 2022 By

faisal_faisi

CS403

CS403 Midterm Past Papers Practice Quiz

Welcome to CS403 Midterm Online Practice Quiz.

You can check your preparation of CS403 for your Exams here.

Questions Will be different every time you will attempt.

1 / 30

Category: CS403-mid

Which of the following is NOT a feature of Context DFD?

a. all sources/sinks (external entities)

b. sub-processes (which explain and decomposed the major process into small processes)

c. data flows linking the process to the sources and sinks (external entities)

d. one process (which represents the entire system)

2 / 30

Category: CS403-mid

A collection of concepts that can be used to describe the structure of a database

a. Data model

b. Data

c. DBMS

d. Database

3 / 30

Category: CS403-mid

An entity can be logically connected to another by defining a ____.

a. superkey

b. primary key

c. hyperlink

d. common attribute

4 / 30

Category: CS403-mid

Which of the following functions are NOT performed by a database administrator?

a. Establishing standards and procedures for database systems

b. Allocation of storage locations and data structures

c. Planning, designing and implementing database systems

d. Communicating with database users

5 / 30

Category: CS403-mid

The Entity Relation Model models

a. Entities and Relationships

b. Entities

c. Relationships

d. Entities, Relationships and Processes

6 / 30

Category: CS403-mid

The ER- data model is an example of:

a. Logical database

b. Physical database

c. Conceptual database

d. Relational database

7 / 30

Category: CS403-mid

Which of the following is true for the relational model?

a. Constraint is a rule that restricts the values in a database

b. Complex key is a key consisting of more than one attribute.

c. Degree of a relation is the number of rows in a relation

d. Null value is a blank or zero value given to an attribute value when its value is inapplicable or its value is unknown.

8 / 30

Category: CS403-mid

Which of the following is NOT a feature of Context DFD?

a. one process (which represents the entire system)

b. all sources/sinks (external entities)

c. sub-processes (which explain and decomposed the major process into small processes)

d. data flows linking the process to the sources and sinks (external entities)

9 / 30

Category: CS403-mid

Which of the following is INCORRECT with respect to file systems?

a. The efficiency of a file system depends on how efficiently operations such as retrieve, insert, update, delete may be performed on the information stored in the file

b. Some physical organisations use pointers to record blocks to locate records on disk.

c. A logical record is concerned with efficient storage of information in the secondary storage devices.

d. At the physical level, pointer or hashed address scheme may be employed to provide a certain degree of data independence at the user level.

10 / 30

Category: CS403-mid

A database system allows the following EXCEPT

a. more critical functions in organisations to be computerised and the need to keep a large volume of data available in an up to the minute current state increased

b. management and control of data towards an efficient working of an organisation.

c. integration of data across multiple applications into a single application

d. any user to access all its data

11 / 30

Category: CS403-mid

Consider the relation Interview(CandidateNo, InterviewDate, InterviewTime, StaffNo, RoomNo) and the following functional dependencies.

FD1 : CandidateNo, InterviewDate -> InterviewTime, StaffNo, RoomNo FD2 : RoomNo, InterviewDate, InterviewTime -> StaffNo, CandidateNo FD3 : StaffNo, InterviewDate -> RoomNo Which of the following is correct?

a. The relation Interview is in 3NF

b. The FD2 violates 2NF

c. The relation Interview is in BCNF.

d. The FD3 violates 3NF.

12 / 30

Category: CS403-mid

Which of the following is true about NOT NULL constraint?

a. prevents any actions that would destroy links between tables with the corresponding data values

b. limit the values that can be placed in a column.

c. enforces the uniqueness of the values in a set of columns

d. enforce domain integrity

13 / 30

Category: CS403-mid

Select the correct statement about the ANSI/SPARC architecture

a. The conceptual level is a level of indication between the internal level and the external level

b. The external level is not concerned with individual user perceptions, while the conceptual level is concerned with a community user perception.

c. The internal level in a database system will definitely be relational

d. Any given database has many conceptual schemas and one physical schema, but it has only one external schemas.

14 / 30

Category: CS403-mid

As part of database naming conventions, attribute names should use suffixes such as ID, NUMBER or CODE for the _______.

a. index

b. primary key

c. determinant

d. foreign key

15 / 30

Category: CS403-mid

A collection of related data is

a. Database

b. Data

c. Relational model

d. Logical model

16 / 30

Category: CS403-mid

Controlling redundancy in a database management system DOES NOT help to

a. avoid unnecessary wastage of storage space

b. avoid unauthorised access to data

c. avoid duplication

d. avoid inconsistency among data

17 / 30

Category: CS403-mid

A relation (from the relational database model) consists of a set of tuples, which implies that

a. all tuples in a particular relation may have different attributes

b. all tuples in a relation must be distinct

c. relational model supports multi-valued attributes whose values can be represented in sets.

d. for any two tuples, the values associated with all of their attributes may be the same.

18 / 30

Category: CS403-mid

User rights information is stored in

a. Physical database

b. Catalog

c. Logical database

d. Buffer

19 / 30

Category: CS403-mid

Which of the following is true about relational schema?

a. Contains only derived attributes

b. The sequence of columns is significant

c. The sequence of rows is significant

d. Values are atomic

20 / 30

Category: CS403-mid

A description on a particular collection of data using the given data model

a. None of the above

b. Relation

c. Schema

d. Database

21 / 30

Category: CS403-mid

Which of the following enforces a relation into 1st normal form?

a. Every non-key attribute is fully functionally dependent on primary key

b. The domain of attribute must include only atomic values.

c. non-key attribute is non-transitively dependent on primary key.

d. Every non-key attribute is partially dependent on super key

22 / 30

Category: CS403-mid

Which of the following constraints enforces entity integrity?

a. PRIMARY KEY

b. FOREIGN KEY

c. NOT NULL

d. CHECK

23 / 30

Category: CS403-mid

Which of the following is a correct way to implement one-to-many relationship while designing tables?

a. using a junction table with the keys from both the tables forming the composite primary key of the junction table.

b. by splitting the data into two tables with primary key and foreign key relationships

c. as a single table and rarely as two tables with primary and foreign key relationships.

d. by splitting each table into three

24 / 30

Category: CS403-mid

Which of the following most certainly implies the need for an entire table to implement?

a. A ternary relationship

b. An identifying relationship

c. A recursive relationship

d. A binary relationship

25 / 30

Category: CS403-mid

Select the correct statement among the following.

a. When different entity types participate only once in a single relationship type it is called a recursive relationship

b. Cardinality ratios for binary relationship are displayed on Entity Relationship Diagrams by using a diamond shape notation

c. Role names are not technically necessary in relationship types when all the participating entity types are distinct.

d. Partial participation which is also called existence dependency is displayed as a double line connecting the participating entity type to the relationship

26 / 30

Category: CS403-mid

A weak entity type

a. both (a) and (b)

b. does not have a key attribute(s)

c. none of the above

d. must have total participation in an identifying relationship

27 / 30

Category: CS403-mid

Which of the following constraints enforces entity integrity?

a. PRIMARY KEY

b. FOREIGN KEY

c. NOT NULL

d. CHECK

28 / 30

Category: CS403-mid

Making a change to the conceptual schema of a database but not affecting the existing external schemas is an example of

a. Physical data independence

b. Logical data independence

c. Concurrency control.

d. Functional dependency

29 / 30

Category: CS403-mid

If K is a foreign key in relation R1, then

a. every tuple of R1 has a distinct value for K.

b. K is a primary key for R1.

c. K is a key for some other relation

d. K cannot have a null value for tuples in R1.

30 / 30

Category: CS403-mid

Identify the correct statement with respect to normalization

a. Normalization can be used as a top-down standalone database design technique

b. Normalization is a formal technique that can be used only at the starting phase of the database design

c. The process of normalization through decomposition must achieve the dependency reservation property at any cost whereas the lossless join property is sometimes sacrificed.

d. The process of normalization through decomposition must achieve the lossless join property at any cost whereas the dependency reservation property is sometimes sacrificed.

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Note before downloading CS403 midterm past paper

One thing to note dear fellows that you must don’t rely on these papers only. They can be a source of help but not an ultimate solution. If you want to get good marks in your exams you are advised to go through all of your handouts and must watch all of the video lectures.

Golden rules for good marks in VU Exams.

As per my experience, I have developed some golden rules for getting good marks in Virtual University Exams based on experience. I got 3.96 CGPA by following these rules.So here they are:

Never miss your Quiz, Assignment, or GDB.
Always try to do your Assignment on your own.
Try your best to finish your video lectures 10 days before exams.
Try your best to read your handouts twice before exams.
Read forward attempt backward.
Never schedule more than one paper on the same day.
Your most difficult paper should have a gap of 1 or more days.
Toughest paper must be scheduled first.
Read questions forward and attempt backward.
Don’t waste your time during a paper on illegal activities.

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CS403 Midterm Past Paper online Practice Quiz

CS403 Midterm Past Paper

Practice Quiz from CS403 Midterm Past Paper

Note before downloading CS403 midterm past paper

Golden rules for good marks in VU Exams.

As per my experience, I have developed some golden rules for getting good marks in Virtual University Exams based on experience. I got 3.96 CGPA by following these rules.So here they are:

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